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Related Experiment Videos

Reprogramming of implanted pacemaker following external defibrillation

S S Barold, L S Ong, J Scovil

    Pacing and Clinical Electrophysiology : PACE
    |October 1, 1978
    PubMed
    Summary
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    Cardiac defibrillation can reprogram implanted pulse generators. Erratic electrostatic discharges during paddle application may trigger reed switch or internal electronics, causing unintended reprogramming. Further investigation is warranted.

    Area of Science:

    • Biomedical Engineering
    • Cardiology
    • Medical Device Technology

    Background:

    • Implanted pulse generators are crucial for cardiac rhythm management.
    • Cardiac defibrillation is a life-saving procedure for life-threatening arrhythmias.
    • Device reprogramming can lead to suboptimal patient care and necessitate interventions.

    Observation:

    • An explanted pulse generator exhibited reprogramming after cardiac defibrillation.
    • The explanted device showed normal functionality upon analysis.
    • This suggests an external event during defibrillation caused the reprogramming.

    Findings:

    • Testing revealed that defibrillators can produce erratic electrostatic discharges.
    • These discharges, occurring before defibrillation, can generate specific signal sequences.

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  • The signal sequence may activate the IPG's reed switch or internal electronics, leading to reprogramming.

    • Implications:

    • Clinicians should be aware of potential IPG reprogramming during defibrillation.
    • Defibrillation protocols may need adjustment to mitigate reprogramming risks.
    • Further research is needed to fully understand and prevent this interaction.